From Guild Wars 2 Wiki
— In-game description [?]
- Superior Rune of Radiance (2) - gives 5 seconds of Swiftness when using an aura.
- Superior Rune of Radiance (6) - increases aura durations by 33%.
- Grants the Chaos Armor effect.
- The boon/condition trigger uses an internal cooldown of one second.
- The chance of each boon or condition being applied is random.
- The July 9th update add the internal cooldown and changed Protection to become one of the possible random boons; previously, that boon was applied automatically at the start only.